<h1><strong>BASIC ELECTRONIC DEVICES</strong></h1> CONTENT <ol> <li>Definition of Basic Electronic Devices</li> <li>Types of Basic Electronic Devices</li> <li>Uses of Basic Electronic Devices</li> </ol>   <h2><strong>Definition of Basic Electronic Devices</strong></h2> The basic electronic devices are the devices which emit and control the movement of electrons in a desirable manner used in generation of electronic appliances<strong>.</strong> <h2><strong>Types of Basic Electronic Devices</strong></h2> The following are the types of basic electronic devices: <h3>1. Semi Conductors</h3> <img class="size-full wp-image-19731 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/basic-electronic-devices-semi-conductors.jpg" alt="Basic electronic devices - Semi conductors" width="378" height="237" /> <h3>2. Resistors</h3> <img class="aligncenter wp-image-19732 size-full" src="https://classhall.com/wp-content/uploads/2018/06/basic-electronic-devices-resistor.jpg" alt="Basic electronic devices - Resistors" width="397" height="227" />

Unfortunately we could not locate the table you're looking for.<h1>UNDERSTANDING TECHNOLOGY</h1> <p>CONTENT</p> <ol> <li>Introduction to Technology</li> <li>Technology-related Professions</li> <li>Technology Occupations/Careers</li> <li>Types of Technology</li> <li>Importance of Technology</li> <li>Technological Literacy</li> </ol> <p> </p> <h2>Introduction to Technology</h2> <p>Technology is a term derived from the Greek words ‘<strong>techne’</strong> and ‘<strong>logia’</strong> meaning the study of craft or art. Technology is basically a systematic way of doing things or solving problems for the good of mankind. Technology is also a human activity directed at designing and making products like machines, computers, textiles, household devices and others, which make human living comfortable.</p> <p>Technology is the processes (method) and products (materials) that make life easy and stress free. It can also be defined as cultural traditions developed in human communities for developing the physical and biological environment. Technology is also a new knowledge, idea, skill, procedure, or technique for doing or using things which may result into new things being produced. Technological development could be traced in the following areas:</p> <ol> <li>Food</li> <li>Clothing</li> <li>Shelter</li> <li>Communication</li> <li>Transportation, and</li> <li>Manufacturing.</li> </ol> <p> </p> <h2>Technology-related Professions</h2> <p>Technology is in the area of producing things, and providing services or using things in given ways. Such areas of human endeavor include engineering and construction, medicine, pharmacy, agriculture, business and commerce.</p> <p> </p> <h2>Technology Occupations/Careers</h2> <p></p>

<h1>SAFETY GUIDELINES</h1> <p>CONTENT</p> <ol> <li>Introduction to Safety Guidelines</li> <li>Safety Guidelines for Pedestrians</li> <li>Safety Guidelines for Cyclists</li> </ol> <p> </p> <h2>Introduction to Safety Guidelines</h2> <p>Safety means protection from danger or injury. Safety guidelines are the rules to be followed in order to reduce or eliminate danger or injury. The safety of road users such as pedestrians, cyclists and motorists is highly important given the number of road accidents on roads and highways. Great importance also needs to be placed on the safety of students and their instructors in workshops in order to prevent accidents.</p> <p>Accidents are unpleasant events. They happen unexpectedly and cause injury or damage. We must plan against them by taking safety measures.</p> <p> </p> <h2>Safety Guidelines for Pedestrians</h2> <p>The following safety guidelines for pedestrians should be observed:</p> <p>1. Always walk on the left side of the road facing oncoming traffic.</p> <p>2. Where sidewalks are provided, use them rather than walking on the tarred road.</p> <p>3. Wear reflective or bright coloured clothes at night and carry a torch.</p> <p>4. When crossing the road, look left, right and left again before crossing.</p> <p>5. Walk quickly when crossing.</p> <p>6. Pedestrians should attempt to cross the road only at a safe place such as the:</p> <p>(a) Zebra crossing</p> <p>(b) Pedestrians overhead bridge</p>

<h1>SAFETY GUIDELINES FOR MOTORISTS</h1> <p>CONTENT</p> <ol> <li>Meaning of Safety Guidelines for Motorists</li> <li>Safety Guidelines for Motorists</li> </ol> <p> </p> <h2>Meaning of Safety Guidelines for Motorists</h2> <p>Motorists are road users who drive cars, buses, trucks and lorries. Rules meant to help people avoid danger or injury are called safety guidelines. Safety guidelines for motorists are therefore rules and regulations made to ensure that motorists drive safely and responsibly in order to guarantee the safety of the motorists and other road users.<br /> <br /> </p> <p> </p> <h2>Safety Guidelines for Motorists</h2> <p>The following are the safety guidelines for motorists:</p> <ol> <li>Use of seat belts. The use of seat belts help to prevent serious injuries in the event of an accident. Seat belts hold the driver and passengers tightly onto their seats.</li> <li>Obeying all traffic rules.</li>

<h1>WORKSHOP SAFETY</h1> <p>CONTENT</p> <ol> <li>Introduction to Workshop Safety</li> <li>Meaning of Workshop Accident</li> <li>Causes of Workshop Accident</li> <li>Workshop Safety Rules</li> <li>Types of Accidents in the Workshop</li> <li>Workshop Safety Devices</li> </ol> <p> </p> <h2>Introduction to Workshop Safety</h2> <p><strong>Safety</strong> is freedom from danger. It is protection from risk of harm or injury. It is also protection against damage to machines, tools as well as the prevention or removal of factors that can lead to accident. Safety must be ensured in the workshop.</p> <p>A<strong> workshop</strong> is a place where technical and engineering works are carried out.</p> <p><strong>Workshop safety</strong> is protection from risk of harm or injury to humans or damage to machines and tools in the workshop.</p> <p> </p> <h2>Meaning of Workshop Accident</h2> <p>An accident is an unexpected event resulting in injury, illness or death as well as damage to property. Accident occurs as a result of hazards. Hazard is both an unsafe condition and unsafe act. It makes an accident to occur. Hazard is, therefore, any activity, situation or substance that causes harm or injury to someone in a workshop while he/she is working.</p> <p> </p> <h2>Causes of Workshop Accident</h2> <p>The basic causes of accidents are unsafe conditions of machinery, equipment, or surroundings, and the unsafe actions of persons that are caused by ignorance or neglect of safety principles.</p> <p>The following are the causes of workshop accidents:</p> <ol> <li>Lack of safety devices.</li> <li>Failure to use safety devices provided.</li> <li>Failure to follow laid-down methods for handling tools, equipment and machines.</li>

<h1><strong>WORKSHOP SAFETY RULES AND REGULATIONS</strong></h1> CONTENT <ol> <li>Safety Precautions or Attitudes in the Workshop</li> <li>General Safety Precautions in Workshops</li> <li>Accident Prevention Techniques</li> <li>Types of Fire</li> <li>Safety Precautions in Fire Accidents</li> </ol>   <h2><strong>Safety Precautions or Attitudes in the Workshop</strong></h2> The following are the safety precautions or attitudes in the workshop: 1. Obedience: Pupils must obey the instructions of their teachers at all times 2. Humility: Show respect to everybody and when you are in doubt about anything, ask question. 3. Fiddling: Never play with any tool, equipment and machine in the workshop, such as ‘’ON/OFF’’ switch. 4. Horseplay: Do not run around in the workshop. Always, be patient and never rush. 5. Negligence: Report any fault or injury to your teacher, no matter how small. <h2><strong>General Safety Precautions in Workshops</strong></h2>

Unfortunately we could not locate the table you're looking for.<h1>PROPERTIES OF MATERIALS - WOOD</h1> <p>CONTENT</p> <ol> <li>Definition of Materials</li> <li>The Definition of Wood</li> <li>Identification of Wood</li> <li>Classification and Properties of Wood</li> <li>Differences in the Properties of Hardwood and Softwood</li> <li>Properties of Materials and Identification of Wood, Timber, Structure of Wood</li> <li>The Growth of Timber and Wood Structure</li> <li>Five Main Parts Cross Section, Classes and Properties</li> </ol> <p> </p> <h2>Definition of Materials</h2> <p>Materials are substances from which other things can be made. Basically, they can be classified into two: metallic and non-metallic. Furthermore, the metallic ones can be subdivided into ferrous and non-ferrous metals, while the non-metallic ones can be divided into natural and synthetic materials.</p> <p><img class="size-full wp-image-19706 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/properties-of-materials.jpg" alt="Properties of materials" width="600" height="175" /></p> <p> </p> <h2>The Definition of Wood</h2> <p>One of the materials that is supplied by nature is wood. Wood is commonly used in some engineering manufacture because it is light, strong and can be worked upon easily.</p> <p>Wood is a material obtained from trees. It is made up of cellulose and lignin each consisting of 60% and 28% respectively.</p> <p> </p> <h2>Identification of Wood</h2> <p>Generally, wood has very good combination of colours to give it high decorative value. This makes it possible to identify some woods by their colour. Examples are:</p> <p></p>

<h1>PROPERTIES OF CERAMICS; PROPERTIES OF GLASS</h1> <p>CONTENT</p> <p>Properties of Ceramics</p> <ol> <li>Definition of Ceramics</li> <li>Classification of Ceramic Materials</li> <li>Properties of Ceramics</li> </ol> <p>Properties of Glass</p> <ol> <li>Definition of Glass</li> <li>Properties of Glass</li> <li>Uses of Glass</li> </ol> <p> </p> <h2>Properties of Ceramics</h2> <h3>Definition of Ceramics</h3> <p>Clay exists naturally in many parts of the world. When it is wet, it can easily be molded into different shapes and sizes. We use clay to mould various objects like storage pots, cooking pots and dishes.</p> <p>We use mud to construct support for cooking pots, to build houses and also to make bricks for building houses. We make cement blocks that we use for building houses by mixing sand and cement to get typical shape. All the above solid objects made from clay, mud or cement are called ceramics.</p> <p>Ceramics break easily when dropped. We say they are brittle; this differentiates ceramics from metals, plastics, wood and rubber. Ceramics are less dense than most metals. They have high melting points.</p> <p>They are a very large group and have very wide uses such as:</p> <ol> <li>Refractory ceramics (high temperature bricks) for furnaces and flue linings.</li> <li>Tiles, such as roof tiles, glazed and unglazed floor and wall tiles, including white tiles.</li> <li>Sanitary fittings of all kinds usually known as white ware</li> <li>Common brick to high grade engineering brick used for the construction of machinery bases. Basically, they are of:</li> </ol> <p style="padding-left: 40px">(a) Structural clay products, including common bricks and sewer bricks. These products are dried and fired for strength after being made from a mixture of clay and shale.</p>

<h1>BUILDING MATERIALS</h1> <p>CONTENT</p> <ol> <li>Definition of Building</li> <li>Common Building Materials</li> <li>Identification of Buildings by Materials</li> <li>Uses of Building Materials</li> <li>Uses of Buildings</li> <li>Types of Buildings</li> </ol> <p> </p> <h2>Definition of Building</h2> <p>A building is a structure which is designed by the architects or draughtsman and built for the purpose of providing shelter for human beings. Building materials are the materials used to construct buildings and other structures.</p> <p> </p> <h2>Common Building Materials </h2> <p>The following are the common building materials:</p> <p>(i) Cement (ii) Sand (iii) Gravel (iv) Metal (v) Plastics (vi) Wood (vii) Glass (viii) Leaves (ix) Ceramics (x) Grass, etc.</p> <p><img class="size-full wp-image-19727 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/building-materials.jpg" alt="Building materials" width="368" height="259" /></p> <p style="text-align: center"><strong>Building Materials</strong></p> <p> </p> <h2>Identification of Buildings by Materials</h2> <p>Buildings are identified by the types of materials with which they are erected. They are:</p> <ol> <li><strong>Mud Buildings:</strong> These are erected with loamy or clayed soil which has been properly treated to plastic nature.</li> <li><strong>Brick Building: </strong>Bricks are molded from dried mortar (a mixture of cement, sand and lime and at times clay burnt in a kiln. There two types of Brick Building:</li> </ol> <p style="padding-left: 40px">(i) The Sun dried bricks (ii) The fire burnt bricks (Red bricks)</p> <ol start="3">